Microsoft JET Database Engine error '80004005'

Impossibile usare "". File già in uso.

/rp.asp, line 29


codice:
Dim RSC
Dim RSC_numRows

Set RSC = Server.CreateObject("ADODB.Recordset")
RSC.ActiveConnection = MM_Rp_STRING
RSC.Source = "SELECT * FROM CLIENTI WHERE IDContatto = " RSC__MMColParam ""
RSC.CursorType = 0
RSC.CursorLocation = 2
RSC.LockType = 1
RSC.Open()

RSC_numRows = 0

Dim RSD
Dim RSD_numRows

Set RSD = Server.CreateObject("ADODB.Recordset")
RSD.ActiveConnection = MM_Rp_STRING  'RIGA 29--------------
RSD.Source = "SELECT * FROM INTERVENTO"
RSD.CursorType = 0
RSD.CursorLocation = 2
RSD.LockType = 1
RSD.Open()

RSD_numRows = 0
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non capisco